UEFI Option Greyed Out In BIOS On Inspiron 15-3521

Question

Hello, I have recently installed Windows on my Dell Inspiron 15-3521. Its Running good but I would like to enable UEFI boot and Secure Boot. But When I went to the BIOS and went to the Boot Section, There I saw one Option Names UEFI and below that two options Secure Boot and Fast Boot. But, Unfortunately both of these were greyed out with Disabled Option. So, I can't enable UEFI and Secure Boot. So, Can Anyone Tell Me why is this happening? And how can I Access these Options? System Specifications:- Dell Inspiron 15-3521 OS- Windows 8 Pro 64-Bit CPU- Intel Core i3 2365M @1.40GHz RAM- 2GB DDR3 1600MHz GPU- Intel HD Graphics 3000 1GB HDD- WDC 500GB BIOS Version- A04 Please Help Me, Thanks.................:emotion-2:

obert guo · Accepted Answer

Thats Legacy/ Legacy option Rom. If you are booting from media do that but OS like 8.x than switch to UEFI firmware Settings :)

Dell-Rajesh R · Answer

Hi,

Please follow the steps mentioned below to enable UEFI boot:

Restart the computer and tap F2 at Dell logo.
Under "BOOT" Change the Boot list option to UEFI.
Load Legacy option ROM: Disabled.
Then enable “Secure boot”.
Now tap F10 to Save and Exit.

Please reply if you have any further questions.

Dev Mgr · Answer

Do note that if you change to UEFI, you'll have to reinstall Windows from scratch again.

ejn63 · Answer

UEFI requires that Windows be installed to a disc partitioned with the GPT scheme - if you were using a legacy BIOS mode, it will have been partitioned as MBR, meaning you will need to wipe the drive back to bare metal and reload the OS from scratch.

Tempnarayanc44 · Answer

Why? Why do I need to reinstall Windows? I am only changing my options in the BIOS?

Tempnarayanc44 · Answer

Thank you very very much, My problem is fixed. Thank You.................

Tempnarayanc44 · Answer

OK, Thank You for Replying. I will be greatful to You. Thanks.............:emotion-2:

GANES · Answer

i follow your step but no boot device found. press any key to reboot the machine

jabrothers · Answer

Dell Inspiron 15-3521

OS- Windows 7 ulitimate - 32Bit

CPU- Intel Core i5 3337U @1.80GHz

RAM- 4GB DDR3 2.40GHz

HDD- 500GB

BIOS Version- A12

"When I am going to change the bios boot options,
All options are grayed. i can't scrolling any options in boot or other menus
what will i do?

Please Help Me, Thanks.....

Jamie81972 · Answer

I tried that but the UEFI is greyed out and cannot be selected.

ejn63 · Answer

If you installed Windows with the hard drive in MBR (legacy) mode, you'll need to wipe the drive and then change the system over to UEFI -- UEFI requires a GPT disc, not an MBR one.

This will require a complete reinstall of Windows.

Locked Topics – Laptops General

Was this post helpful?